Carriage for drilling mechanism



De@ 1s, 192s. A

E. C. HOLMES CARRIAGE FOR DRILLING MECHANISM Filed July 16, 1925 2 Sheets-Sheet 2 I N VEN TOR.

A TTORNEY'S Patented Dec. 18, 1928.

*UNITED4 STATES EDWARD C. HOLMES,

or CINCINNATL' omo.

CARRIAGE FOR DRILLING- MECHANISM.

Appncaticn inea July i6, 1925. serial no.y 43,985.

i My invention relates to carriages for drillsl and the like and particularly to a suitable carriagefor supporting an elec-tric drill for use in driving screw spikes into railroad ties for securing the rails to the ties and the tie plates. l

It is the object. of my invention to provide a carriage which willgsupport an electric drill or the llike in v'the chuck of which a screw spike may be secured, and *which ,carriage will be easily movable and which will further provide simple means for aligning the drill or other mechanism with which the screw spike may be inserted into the railroad tie. It is further my object to provide adjustable 'features on my novel carriage which will permit adjustment for rails oi' different widths and rails which are aligned with different distances between the rails.

lVhile my novel structure is primarily adapted to provide a carriage for drilling mechanism for securing screw spikes in railroad ties, l the principle involvedy in the structure is with slight modifications adapted for use with a drill and equivalent devices with which bolts, screws, nails and other securing pieces may be driven in ,alignment so that although the specific example shown` is adapted for a drill for securingscrew spikes, I do not expect to limit myselfl to this particular structure, butto include modifi.- cations in structure with which equivalent functions may be performed.

VReferring now to the drawings:

Figure 1 is a side elevation ot the carriage. l f l Figure 12L is an end elevation ol the drill showing how itis. mounted.

Figure` 2 isan .end velevation of the carriage, and p Figure 3 is atop plan view. Y i

Generally indicated at 1; isy the vertical frame member which is provided with bosses 1 2 and axles 3 which provide a suitable bearing for supporting the standard on the wheel 4. The wheel may be flanged if desired with a peripheral flangefas indicated at 5. vSuitably vtermed in theupright frame member another boss 6 is provided with a hole 7` in which :a rod is secured with a set screw 8. The rod is bent and extends down to such distance above the aligned rail opposite the rail which is beingsecuredwith spikes,` that itwillact as an axle for a smaller; wheel 9 which may be mounted on the axle and held in adjustable position on the rod by means,

maybe securedfin any desired position on the rod so that the wheels of the carriage may be set for any width track on which it is desired to work.

Forked arms 101L are rigidly secured tothe top portion olf the member 1 and these arms extend backwardly at approximately a right angle.` They are provided with slots 11 ex-y tending vertically towardthe track. These slots may be of any desired width randthey furnish the means of providing vertical guidance to the yspider arms indicated at 11a with which most drills are provided and which my carriage is adaptedto supportA I have indicated diagrammatically at 31 in Figures 1 and 1a an electricdrill suitable iorusek with my invention.y The base of the slots naturally limits the downward movement of the drill or screw driving device orturning screw spikes into railroad ties. A lever arm as indicated at lQis pivotal-ly mounted at 13 v in the top of the frame member 1 and the long arms of the lever are forked and extend in alignment preferably onthe outer side oit the forked rigid arms 10a. The lever arms may be provided with extended vhook-like portions 1a which are adapted to bear from above onthe spider arms of the drill. The short arm .ot the lever is provided witha hole as at 15 or other suitable retaining means to` secure the end ofva, spring member 16 vwhich extends from the short arm of the lever to a boss 17 on the. upright member 1. Thetension of thisvspring may be utilized toY counterbalance the weight-*Of the drill so that pressure applied manually tothe forked lever arms exerts a downward thrust on the drill indirect proportion to the pressure f applied. I have found .that v.au/adjustable torsion .spring in Which the force of the spring 'from a contracted-position isutilized to counterbalanceutlfie weight of the drill'v is preferable. the, illustration shown I have Van provided a hook member 19 secured in the hole in the short arm of the lever and this hook member is secured on the end of a rod 20 which extends through a hole in a disc 21 which the upper part of the spring abuts and down through the spring to another disc 22 at the bottom of the springv to which disc the rod is suitably secured with a nut. The upper disc is secured to another disc 23 on the same side of the spring as the disc 22, with tie rods 24. These rods pass through holes in the disc 22 and are secured to the outer disc 23 with adjustment nuts. As the nuts are tightened the contraction of the spring is increased and as the disc 23 is secured in the boss 17, it will readily be understood that the tighter the nuts on the tie rods are drawn down the greater will be the downward pull on the short arm of the lever.

In order to provide a positive adjustment element which will permit the use of the carriage with rails, the heads oit' which vary in width, I have pivotally mounted a clamp plate 25 on a backwardly extended part 26 of the frame oit' the carriage. The clamp plate is provided with lugs 27 which ex tend down over the rail and thus keep the carriage in the center of the rail. By turning this plate on its pivot which may be a stud bolt secured in the frame 26, the distance between the lugs 27V from the pivot point in a crosswise direction may be varied in accordance with the width of the head of the rail.

As the carriage must be provided with a means of aligning the drill so that it will drive the screw spike in a vertical direction I have provided another late 28 which 1s mounted on the frame part 26 which extends at right angles to the direction of the rail and is provided with slots 29 on each side ot the rail which extend in alignment with the rail. The slots 29 are of suiicient width to slidably retain the chuck of a drill so that when a screw spike has been secured in the chuck of the drill and the drill swung to posit-ion with the chuck within the slots, a spike driven with the drill will be in vertical alignment. In, order to provide an indicator plate which will show the position on the tie plate indicated at 29Ct through which a spike will be secured with the chuck of the drill in the slots 29, the plate 28 has strips extended down from the top of the rail as indicated at 30, which indicate the outer periphery of holes 39 in the tie plate through which the spike is usually secured to the rail'. j

The operation yof the carriage to hold a drill for driving screw spikes in railroad ties is as follows. The carriage is placed on the track and the clamp 25 adjusted for the width of the rail, The drill 31 is then seated with spider arms 11 from the sides of the drill disposed within the slots 11. A suitably sized alignment plate 28 in Vwhich the slots 29 are disposed in such position as to clear the base of the rail, is then secured to the carriage. The spring 16 is then tensioned so that the ivoted forked lever will have its handle adjacent the tops of the slots 11 and the drill will have a limit of vertical downward movement from the top part of the slots to the bottom which will give suicient clearance to provide working room for the insertion of the spikes in the chuck. The position ther be noted that the support for the guidev wheel 9 may be adjusted on either side ofthe frame so that the carriage may be used in either' a right hand or left hand position on either of the two rails of a track.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. A screw spike driver carriage comprising, an upright member provided with a carrying wheel, a forked frame member secured to the upright member, vertical slots in the forked frame adapted to guide spider arms of a drilling mechanism or the like, and a pivoted rocker arm member with forked arms in alignment with the forked frame member extended so as to carry spider arms within the guiding slots. Y 2. A screw spike driver carriage comprising an upright member provided with a carrying wheel, a forked frame member secured to the upright member, vertical slots in the forked frame adapted to guide spider arms oi a drilling mechanism or the like, and a pivoted rocker arm member `with forked arms in alignmentfwith the forked frame member extended so as to carry spider arms within the guiding slots and means for counterbalancing the `weight of the driver.

3. A carriage for a drill `or the like adapted to provide means of securing screw spikes in railroad ties comprising in combination a frame, with members adapted to carry the frame on rails of a track, and a portion of the frame provided with vertically,disposed slots for guiding arms extended from a drill, a forked rocking lever with long arms ofthe lever adapted to carry the drill by means o its said arms, means connected with the short arm of the rocking lever and adapted to coun'terbalance the weight of a drill, and

means for vertically aligning a chuck of the drill With the track on which the carriage is adapted to ride.

4. A carriage-for a device for insertingl screw spikes comprising a frame, membersk adapted to carry the frame on rails of a track, a portion of the frame provided With vertically disposed slots for guiding arms extended from said device, a forked rocking lever with long arms adapted to carry such a 10 device, said lever having means .connected therewith for counterbala-ncing the Weight of such a device and means for aligning said carriage on a rail.

EDWARD c. HOLMES. 

